SU1057701A1 - Method of driving vertical working in setting fill-up mass - Google Patents

Abstract

A METHOD FOR FORMING A VERTICAL DEVELOPMENT IN A HARD PLATE MASSIVE, including the formation of a zone of reduced stability by filing a filler and hardening bookmark and the subsequent release of the filler after hardening the bookmark, characterized in that, in order to reduce costs and simplify technology for the construction of the workings, before laying the feed, it is necessary in order to reduce costs and simplify technology in the construction of workings before submitting it to the feed, before applying, to reduce the costs and simplify the technology when building the workings, hardening of the laying is necessary. in the worked-out space, set vertically at least one thermoelement with a length equal to the height of the layer being laid, as a filler is used zuyut hardening Bookmarking a zone of reduced resistance is formed by heating the fuser in the process of hardening the bookmark.

Description

-гь Г ЗФН -

  -1 - s

BUT

g-b

--I.

..

.-.-. -4: g. - .-one -

(L

t

J

  .

to -.

sd 1

cpuei

The invention relates to the mining industry and can be used in the underground mining of mineral deposits with the laying of the developed space with hardening mixtures.

There is a method of forming workings in a hardening tab, which includes mounting in the worked-out space of a frame and a shell of elastic material, filling the shell with an incompressible filler, feeding the tab and removing the filler after the tab has hardened using explosions 1.

The disadvantage of this method is high costs and low processability.

The closest to the proposed technical essence and the achieved result is a method of forming a vertical excavation of a solid filling mass 4, including the formation of a zone of reduced stability by constructing a form in the developed space, filing a filler, filling the developed space of a solid bookmark and then releasing the filler after hardening. 2

The disadvantage of this method is the complex technology of its implementation, due to the erection of the formwork and filing it filler, and the associated costs.

The purpose of the invention is to reduce costs and simplify technology in the construction of workings.

The goal is achieved by the fact that according to the method of forming a vertical excavation in a hardening filling mass, including the formation of a zone of reduced stability by filing a filling and hardening laying and subsequent release of the filling after hardening the laying, set at least vertically before feeding the hardening laying. one thermoelement with a length equal to the height of the layer being laid, a hardening tab is used as a filler, and a zone of low mouth The stability is formed by heating the thermoelement during the hardening process of the bookmark.

FIG. 1 shows a filling array at the place of installation of the thermoelement, vertical section; FIG. 2 shows section A-A in FIG. one

Before laying the worked-out space, for example, when using a continuous layered development system with a notch of layers in a descending order, the thermoelement 1 is installed vertically in the place of future vertical generation. The electrical power supply is drained through a cable located on the soil of the layer. Thermocouple 1 is installed vertically with fasteners, for example with anchoring, and fixed in the roof and the soil of the layer. Then, a hardening tab 2 is fed into the developed space. After filling the developed space, the thermoelement 1 is heated.

During the hardening process of the laying in the area of the thermoelement, an area of elevated temperature stresses is formed, under the action of which a cylindrical shaped zone 3 of high fracture is formed. The radius of the region of elevated temperature depends on the temperature of the thermoelement and the thermophysical properties of the filling mass. Since the filling array has a low thermal conductivity, the zone of influence of the thermoelement is insignificant.

The temperature stresses resulting from the uneven distribution of temperature in the bulk of the filling array and the limited possibility of thermal expansion of the tab cause the formation of areas of reduced strength and stability in the tab. After opening these areas by the workings 4 of the lower layer, the backfill material, which has become unstable, is released from the zone 3 of increased fracturing.

The bulges of the backfill material are initiated, for example, by low-power, powerful explosions produced in the fracture zone.

When forming workings with a complex variable cross section, it is advisable to use thermoelements, the temperature of which varies along their length. When forming the workings of a large cross section in a hardening tab, it is possible to install several thermoelements in one “bush” parallel to each other.

The proposed method allows to reduce costs and simplify the technology in the formation of workings in a hardening filling stock.

.--- 7, - --.:.-;---

- ..; .. -V. /; - “/ -. -t ...

.-b, -d.

   / v. b) ". . -. t

 B i

: - m -: -------: ----; -. t

 t

--- rfig. 2

 fc

t

Claims (1)

METHOD FOR FORMING A VERTICAL PRODUCTION IN A HARDING MORTGAGE ARRAY, including the formation of a zone of reduced stability by feeding filler and hardening bookmark into it and the subsequent release of filler after hardening the bookmark, characterized in that, in order to reduce costs and simplify the technology during construction workings, at least one thermocouple is installed vertically in the excavated space vertically with a length equal to the height of the layer to be laid, as a filler hardening bookmark, and the zone of reduced stability is formed by heating the thermocouple during the hardening of the bookmark. SU „„ 1057701